A60 Marine Fire Smoke Damper - Actionair
A60 Marine Fire Smoke Damper - Actionair
A60 Marine Fire Smoke Damper - Actionair
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A-60 <strong>Marine</strong> <strong>Fire</strong> <strong>Damper</strong><br />
Acoustic Data<br />
The data presented is from the<br />
Laboratory Determination of Acoustic and<br />
Aerodynamic Performance of A-60 <strong>Marine</strong><br />
<strong>Fire</strong> <strong>Damper</strong>s.<br />
A programme of extensive tests was<br />
carried out by an independent test facility,<br />
approved under the NAMAS Scheme, in<br />
accordance with BRITISH STANDARDS<br />
Nos. 4196, 4773, 4856, 4857 and 4954.<br />
From the selection of a duct velocity<br />
within the operational parameters of the<br />
damper a resultant pressure drop from<br />
Table 1 can be determined and the sum<br />
of these two components applied to the<br />
Velocity x Pressure Drop Vs Sound Power<br />
Level Graph. (Table 2).<br />
The graph is the result of a full<br />
range of acoustic tests with the blades<br />
set in the fully open position.<br />
Example:<br />
Duct with a design velocity of 8 m/sec<br />
and the A-60 <strong>Marine</strong> <strong>Fire</strong> <strong>Damper</strong> RECT<br />
damper blades in the fully open position.<br />
Pressure Drop = 22 Pa (Table 1).<br />
Multiply Velocity x Pressure Drop<br />
8 x 22 = 176.<br />
From Sound Power Graph (Table 2) plot<br />
176 on horizontal Velocity/Pressure axis<br />
against the A-60 <strong>Marine</strong> <strong>Fire</strong> <strong>Damper</strong><br />
RECT outlet (induct) graph to obtain<br />
47dBW on Vertical Sound Power Level<br />
Axis. Add or subtract corrections to the<br />
47dBW to provide full spectrum analysis.<br />
<strong>Damper</strong> Leakage Table 3<br />
A-60 <strong>Marine</strong> <strong>Fire</strong> <strong>Damper</strong> damper closed blade leakage.<br />
Standard (without blade seals)<br />
Optional (with blade seals)<br />
DIFFERENTIAL PRESSURE (Pa)<br />
1500<br />
1000<br />
500<br />
100<br />
The Spectrum Correction Data is applied<br />
to the number obtained from the graph<br />
and a complete Sound Spectrum of Flow<br />
Generated Noise for both Outlet (in duct)<br />
and Breakout (casing radiated) is obtained.<br />
10<br />
1 10 50 100 200<br />
LEAKAGE (I/s per m2)<br />
Pressure Drop Vs Velocity Table 1 Velocity (m/s) X Pressure Drop (Pa) Vs Sound Power Level (dBW) Table 2<br />
PRESSURE DROP (Pa)<br />
100<br />
90<br />
80<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
98<br />
7<br />
6<br />
5<br />
4<br />
3<br />
EXAMPLE LINE<br />
A-60 RECT<br />
A-60 CIRC<br />
SOUND POWER LEVEL (dBW)<br />
90<br />
80<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
EXAMPLE LINE<br />
A-60 RECT BREAKOUT<br />
A-60 CIRC BREAKOUT<br />
A-60 CIRC OUTLET (INDUCT)<br />
A-60 RECT OUTLET (INDUCT)<br />
2<br />
10<br />
1<br />
0<br />
1 2 3 4 5 6 7 8 910 15<br />
10<br />
20<br />
30<br />
40<br />
50<br />
60<br />
70<br />
80<br />
90<br />
100<br />
200<br />
300<br />
400<br />
500<br />
600<br />
700<br />
800<br />
900<br />
1000<br />
2000<br />
3000<br />
4000<br />
5000<br />
6000<br />
7000<br />
8000<br />
9000<br />
10000<br />
VELOCITY (m/s)<br />
VELOCITY X PRESSURE DROP (m/s Pa)<br />
Outlet (Induct) Spectrum Corrections<br />
Octave Band63 125 250 500 1k 2k 4k 8k<br />
A-60 RECT 5 4 5 5 3 1 -3 -5<br />
A-60 CIRC 9 4 4 5 3 1 -3 -6<br />
Breakout Spectrum Corrections<br />
63 125 250 500 1k 2k 4k 8k Hz<br />
8 11 9 6 -3 -6 -14 -17 dB<br />
6 10 8 4 -3 -3 -11 -14 dB<br />
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